Details

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BUY LTC2942IDCB-1#PBF https://www.utsource.net/itm/p/8164766.html
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Parameter	Symbol	Min	Typical	Max	Unit	Description
Supply Voltage	VCC	2.9		5.5	V	Operating supply voltage range
Supply Current	ICC		130		μA	Supply current at VCC = 5V, TA = 25°C
Temperature Range		-40		85	°C	Operating ambient temperature range
Input Voltage Measurement	VIN	0		5.5	V	Maximum input voltage measurement range
Battery Voltage Measurement	VBATT	0		5.5	V	Maximum battery voltage measurement range
Charge Current Measurement	ICHRG		±0.5		%	Accuracy of charge/discharge current measurement
Accumulated Charge Error	QACC		±0.75		%	Accuracy of accumulated charge measurement over temperature and VCC
Conversion Time	TCONV		16.6		ms	Time to complete a single conversion
Shutdown Current	ISD		0.1		μA	Supply current in shutdown mode

Instructions for Use:

1. Power Supply Connection:

   • Connect the VCC pin to a power supply within the specified voltage range (2.9V to 5.5V).
   • Ensure proper decoupling capacitors are placed close to the VCC and GND pins to stabilize the power supply.

2. Input Voltage Monitoring:

   • Connect the VIN pin to the voltage source you wish to monitor. The maximum voltage should not exceed 5.5V.
   • For battery monitoring applications, connect the VBATT pin directly to the battery terminals.

3. Charge Current Sensing:

   • Place a sense resistor between the charger and the battery.
   • Connect the high side of the sense resistor to the ISENSE+ pin and the low side to the ISENSE- pin.

4. Configuration via I2C Interface:

   • Configure the device using the I2C interface by setting up registers according to the desired application requirements.
   • Refer to the datasheet for register maps and configuration details.

5. Shutdown Mode:

   • To enter shutdown mode, set the appropriate bit in the control register.
   • This will reduce the supply current to approximately 0.1μA.

6. Data Reading:

   • Read the measured values from the respective data registers through the I2C interface.
   • Convert the digital readings to physical units using the calibration factors provided in the datasheet.

7. Error Handling:

   • Monitor status registers for any errors or alerts.
   • Implement error handling routines as necessary to ensure reliable operation.

For detailed specifications and advanced configurations, refer to the full datasheet available from the manufacturer's website.

(For reference only)